synthesis and characterisation of hydrophobic modified

Synthesis and characterisation of hydrophobic modified

Synthesis and characterisation of hydrophobic modified polyacrylamide. Shuhui Wu. Applied Chemistry, RMIT University, GPO Box 2476V, Melbourne, 3001, Australia Polyacrylamide has been modified hydrophobically with low amounts of N‐alkyl groups by a transamidation method, using alkylamines.

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synthesis of hydrophobically modified polyacrylamide

Synthesis of hydrophobically modified polyacrylamide

The synthesis of HM polyacrylamides in inverse miniemulsion was initially optimized by free-radical polymerization of acrylamide initiated by AIBN. The possibility of copolymerization of monomers with different hydrophilicities was shown then on the acrylamide-styrene and acrylamide-lauryl methacrylate model pairs.

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synthesis and characterisation of hydrophobic modified

Synthesis and characterisation of hydrophobic modified

Synthesis and characterisation of hydrophobic modified polyacrylamide Article in Polymer International 53(11):1821-1830 · November 2004 with 496 Reads How we measure 'reads'

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synthesis of eydrophobic modified polyacrylamide

Synthesis of eydrophobic Modified Polyacrylamide

Hydrophobic modified polyacrylamide (HMPAM) is a new type of functional polymer with high performance and good thermal stability. It is an important type of hydrophobic water-soluble

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synthesis and characterisation of hydrophobic modified

Synthesis and characterisation of hydrophobic modified

Polyacrylamide has been modified hydrophobically with low amounts of N-alkyl groups by a transamidation method, using alkylamines. The amide group in the polymer backbone has been N-substituted in water solutions, where the substituting amine is water-soluble. The alkyl groups include N-alkyl (up to octyl), N,N-diethyl, N,N-dipropyl, N-isopropyl, N,N-diisopropyl and N-cyclohexyl groups.

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synthesis of hydrophobical butyl styrene

SYNTHESIS OF HYDROPHOBICAL BUTYL STYRENE

SYNTHESIS OF HYDROPHOBICAL BUTYL STYRENE-MODIFIED CATIONIC ACRYLAMIDE COPOLYMER Zhong Chuan-Rong Zhong Luo Ping-ya Luo Hu Xiao-bin Hu Xu Min Xu State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest

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synthesis and characterization of a series of modified

Synthesis and characterization of a series of modified

Colloid Polym Sci (2009) 287:237–241 DOI 10.1007/s00396-008-1975-y SHORT COMMUNICATION Synthesis and characterization of a series of modified polyacrylamide Yuzhu Zhao & Jizhu Zhou & Xiaohui Xu & Wenbin Liu & Jingying Zhang & Minghong

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influence of the hydrophobe structure on composition

Influence of the Hydrophobe Structure on Composition

Acrylamide polymers modified with low amounts of alkyl- or alkylarylacrylamides (1−5 mol %) have been prepared by an aqueous micellar copolymerization technique. This method is known to lead to multiblock copolymers in which the number and length of the hydrophobic blocks vary with the initial number of hydrophobes per micelle. The incorporation behavior of different types of hydrophobes and

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one-pot synthesis of polythiol ligand for highly bright

One-pot synthesis of polythiol ligand for highly bright

BHK-21 cells were from the Cell Culture Collection of Vertebrates (St. Petersburg, Russia). The cells were maintained in Dulbecco's modified eagle's medium (DMEM) (HyClone) supplemented with 10% FCS (HyClone). ADV strain K from the collection of viruses of the Bio-Test-Laboratory (Kiev, Ukraine) was used for the experiments. BHK-21 cells were

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role of chemical additives and their rheological

Role of chemical additives and their rheological

Zhao Y, Zhou J, Xu X, Liu W, Zhang J, Fan M, Wang J. Synthesis and characterization of a series of modified polyacrylamide. Colloid Polym Sci 2009; 287: 237–241. Zhao M, Lv W, Li Y, Dai C, Wang X, Zhou H, Zou C, Gao M, Zhang Y, Wu Y. Study on the synergy between silica nanoparticles and surfactants for enhanced oil recovery during spontaneous

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alkali/surfactant/polymer flooding in the daqing oilfield

Alkali/Surfactant/Polymer Flooding in the Daqing Oilfield

Hydrophobically modified associating polyacrylamide (HAPAM) has good compatibility with the Daqing heavy alkylbenzene sulfonate surfactant. The HAPAM alkali/surfactant/polymer (ASP) system can generate ultralow interfacial tension in a wide range of alkali/surfactant concentrations and maintain stable viscosity and interfacial tension for 120 days.

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direct quantification of nanoparticle surface hydrophobicity

Direct quantification of nanoparticle surface hydrophobicity

Hydrophobicity is an important parameter for the risk assessment of chemicals, but standardised quantitative methods for the determination of hydrophobicity cannot be applied to nanomaterials.

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terminal deoxynucleotidyl transferase catalyzes the

Terminal deoxynucleotidyl transferase catalyzes the

The reaction of phosphorylation and phosphonylation of an oligodeoxynucleotide 3′-terminal hydroxyl (oligodeoxynucleotidyl kinase activity) catalyzed by calf thymus terminal deoxynucleotidyl transferase (TDT) was found. Triphosphates modified at Pα-, Pα,γ- or Pα,β,γ-residues served as low-molecular weight substrates.

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modified oligonucleotides as a tool for dna sequencing

Modified oligonucleotides as a tool for DNA sequencing

(2). The increase of stability in case of 5-substituted pyrimidines is explained by hydrophobic interaction of methyl or others hydrophobic groups (bromine, propinyl) in the large groove of DNA helix (3). Fig. 1 represents the schemes of synthesis of modified amidite components for oligonucleotide synthesis:

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sciforum - polymers-2018

Sciforum - polymers-2018

Take a look at our brochure for sponsorship and exhibition opportunities for Polymers 2018. Welcome Message Dear colleagues, friends, and researchers, It is our sincere pleasure and great honor to announce our first international conference PDFA, Polymers: Design, Function and Application, organized by the MDPI open-access journal Polymers.

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new journal of chemistry, - x-mol

New Journal of Chemistry, - X-MOL

We report here reduced graphene oxide (RGO)-catalyzed an ultra-efficient, highly selective and low temperature synthesis of o-nitro phenol using phenol and nitric acid in equimolar ratio. The effects of various parameters such as concentration of reactants, types of catalyst, weight of the catalyst, solvent, temperature and time of reaction on the catalytic reaction have been explored.

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alkali/surfactant/polymer flooding in the daqing oilfield

Alkali/Surfactant/Polymer Flooding in the Daqing Oilfield

Hydrophobically modified associating polyacrylamide (HAPAM) has good compatibility with the Daqing heavy alkylbenzene sulfonate surfactant. The HAPAM alkali/surfactant/polymer (ASP) system can generate ultralow interfacial tension in a wide range of alkali/surfactant concentrations and maintain stable viscosity and interfacial tension for 120 days.

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recent advances in host–guest self‐assembled cyclodextrin

Recent Advances in Host–Guest Self‐Assembled Cyclodextrin

Cyclodextrin is the truncated cone with an inner hydrophobic pocket and outer hydrophilic exterior. The inner diameters of hydrophobic cavities are 4.7–5.3, 6.0–6.5, and 7.5–8.3 Å for α, β, and γCyD respectively.

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prussian blue and its analogues: electrochemistry

Prussian Blue and Its Analogues: Electrochemistry

Katarzyna Siuzdak, Mariusz Szkoda, Jakub Karczewski, Jacek Ryl and Anna Lisowska-Oleksiak, Synthesis and photoelectrochemical behaviour of hydrogenated titania nanotubes modified with conducting polymer infiltrated by redox active network, Electrochimica Acta, 222, (1281), (2016).

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oriented antibody immobilization to polystyrene

Oriented antibody immobilization to polystyrene

Background. Polyacrylamide is a common material for solid-phase carriers of biological macromolecules, including immunoreagents used in affinity chromatography and immunoassay [1,2].Microparticles obtained by the acrylamide and methylene-bis-acrylamide copolymerization require amide group activation [].Various schemes of polyacrylamide modification to introduce applicable functional groups for

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ru2533824c1 - method of obtaining of magnetically

RU2533824C1 - Method of obtaining of magnetically

FIELD: chemistry. SUBSTANCE: polyacryleamides are obtained by heterophase copolymerisation of vinyl monomers. First, n-dodecyclacrylamide is added to water solution of sodium dodecylsulfate, applied as stabiliser, with mixing. Then, water solution of acryleamide and acrylic acid is added to obtained dispersion. Reaction is carried out in alkaline medium at pH 9.5 with general concentration of ...

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synthesis and stability of a rapana thomasiana hemocyanin

SYNTHESIS AND STABILITY OF A RAPANA THOMASIANA HEMOCYANIN

SYNTHESIS AND STABILITY OF A RAPANA THOMASIANA HEMOCYANIN CONJUGATED WITH VITAMIN B9 Maya Guncheva1, Yuliana Raynova 1, Krassimira Idakieva1, Svetla Todinova 2, Denitsa Yancheva 1 ABSTRACT This is the first report on the synthesis of vitamin B9-Rapana thomasiana hemocyanin conjugates (vit. B9-RtH).

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one-step preparation of antifouling polysulfone

One-Step Preparation of Antifouling Polysulfone

A novel method for one-step preparation of antifouling ultrafiltration membranes via a non-solvent induced phase separation (NIPS) technique is proposed. It involves using aqueous 0.05–0.3 wt.% solutions of cationic polyelectrolyte based on a copolymer of acrylamide and 2-acryloxyethyltrimethylammonium chloride (Praestol 859) as a coagulant in NIPS.

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conference proceedings | institute of polymer materials

Conference proceedings | Institute of Polymer Materials

Materials and abstracts of International conferences and symposia

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prussian blue and its analogues: electrochemistry

Prussian Blue and Its Analogues: Electrochemistry

Katarzyna Siuzdak, Mariusz Szkoda, Jakub Karczewski, Jacek Ryl and Anna Lisowska-Oleksiak, Synthesis and photoelectrochemical behaviour of hydrogenated titania nanotubes modified with conducting polymer infiltrated by redox active network, Electrochimica Acta, 222, (1281), (2016).

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oriented antibody immobilization to - springerlink

Oriented antibody immobilization to - SpringerLink

Polyacrylamide is a common material for solid-phase carriers of biological macromolecules, including immunoreagents used in affinity chromatography and immunoassay [1, 2].Microparticles obtained by the acrylamide and methylene-bis-acrylamide copolymerization require amide group activation [].Various schemes of polyacrylamide modification to introduce applicable functional groups for covalent

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chemical methods of dna and rna fluorescent labeling

Chemical Methods of DNA and RNA Fluorescent Labeling

Fluorescent labeling of DNA with TMR hydrazine. Completely depurinated [ 32 P]d(T 6 GT 8) (10 pmol) was dissolved in 10 µl 0.05 M sodium acetate buffer, pH 3.75–5.8, or sodium phosphate buffer, pH 6.5–7.0 (or 10 µg of depurinated DNA was dissolved in 10 µl sodium acetate buffer, pH 4.0) and 1 µl 4 mM TMR hydrazine ( 9) (>10-fold molar excess) in 20% methanol was added to the reaction

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synthesis and stability of a rapana thomasiana hemocyanin

SYNTHESIS AND STABILITY OF A RAPANA THOMASIANA HEMOCYANIN

This is the first report on the synthesis of vitamin B9-Rapana thomasiana hemocyanin conjugates (vit. B9-RtH). Proteins modified with 25 and 150 vitamin B9 residues аre obtained in a coupling reaction between N-hydroxysuccinimide-activated γ -carboxylic groups of vitamin B9 and the amino-groups of N-terminal amino acids

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ru2208619c2 - aqueous fluid polymer suspension - google

RU2208619C2 - Aqueous fluid polymer suspension - Google

FIELD: polymer materials. SUBSTANCE: suspension contains water-soluble synthetic associative thickening polymer, water-soluble carbon-containing salt (in particular aliphatic carboxylic acid sodium salts), and water. Suspension is prepared by dissolving carboncontaining salt in water, adding polymer, and mixing it with salt solution.

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a cascade of thermophilic enzymes as an approach to the

A cascade of thermophilic enzymes as an approach to the

We propose a new approach for the synthesis of biologically important nucleotides which includes a multi-enzymatic cascade conversion of D-pentoses into purine nucleotides. The approach exploits nucleic acid exchange enzymes from thermophilic microorganisms: ribokinase, phosphoribosylpyrophosphate synthetase, and adenine phosphoribosyltransferase. We cloned the ribokinase gene from Thermus sp

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can associative polymers reduce the residual oil

Can Associative Polymers Reduce the Residual Oil

Abstract The oil recovery potential of acrylamide-based, associative thickening polymers has recently been evaluated in a coreflood study of our department. Associative polymers are anionic, water-soluble copolymers modified with varying degress of

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binding among h-2kd-restricted cytolytic t lymphocyte

Binding Among H-2Kd-restricted Cytolytic T Lymphocyte

hydrophobic pocket located between the junctional CDR3 loops. We propose that this nonpolar domain in these locations allow T cell receptors to avidly and spe-cifically bind epitopes containing non-peptidic side chains. CD81 CTL1 recognize peptides bound to MHC class I mole-cules on the surface of target cells by means of their TCR (1).

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